Re: [PATCH V4 14/22] LoongArch: Add signal handling support

Hi, Al,

On Sun, Oct 3, 2021 at 10:36 AM Al Viro [off-list ref] wrote:

On Mon, Sep 27, 2021 at 02:42:51PM +0800, Huacai Chen wrote:

quoted

This patch adds signal handling support for LoongArch.

No matter what you get in regs[4] after sys_rt_sigreturn(),
you should *NOT* treat it as restartable.  IOW, you need to set
regs[0] to 0 in there (or in restore_sigcontext()).  See e.g.
653d48b22166 for details of similar bug on arm.

Thanks, regs[0] should be cleared here.

Huacai